[Project_owners] How to "integrate" Drupal into our project like br.mozdev.org?

[Hung. NGUYEN Manh]

Hello,

On br.mozdev.org, I see that they not only have their Drupal themed with a new theme (different from the default ones), but also have it somehow "integrated" into their main project. It also has a Twitter module, etc...

I think it's a good thing to do, as it won't make the users feel like on a different site when we point them to our Drupal. (And we may let the Drupal posts show up in main project's first index page(?!)

So, as I'm not a web coder, may anyone tell me a simple solution to do that? Do we need to file bugs for this request?
Thanks in advance :)

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Hùng. NGUYEN Manh